/**
 * Copyright 2016 - 2018 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jetbrains.rsynk.server.command


internal interface TimerInstance {
    fun getTimeFromStart(): Long
}

private class TimerInstanceImpl(
        private val startTime: Long
) : TimerInstance {
    override fun getTimeFromStart(): Long {
        val now = System.currentTimeMillis()
        return Math.max(now - startTime, 1)
    }
}

internal object CommandExecutionTimer {
    fun start(): TimerInstance {
        val now = System.currentTimeMillis()
        return TimerInstanceImpl(now)
    }
}
